I am not very active in the hobby these days, but I am pretty sure the vault files you are looking for are generated, once an object is actually left in the specific clans storeroom, in game. They will be in the same directory as the regular clan files (eg ../clans).
MudProg files are a different story. I am not sure how they are generated, as I always thought any mudprogs you made were written directly into the area file of the relevant room/object/mob - so hopefully someone else can answer that.
Finally, allow me to say welcome to the group, and if you are who I think you are, I also want to say thanks for your wonderfully fun game - have played it for years. If you aren't...no harm done